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Replacing colors including blurs - Printable Version

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Replacing colors including blurs - Yutah123 - 03-13-2018


Operating system: macOS High Sierra, version 10.13.3
GIMP version: GIMP 2.8.22


[attachment=1545]
Hello everyone. I'm trying to replace the white color of the starburst shape above with 6 other colors (the result would be 6 other starbursts in each of the colors). The problem is, I don't know how to replicate the blurring effect on the edges exactly the same way with the other colors, so any help would be appreciated.

The colors I intend to use: Here's what the starburst looks like when zoomed out
[attachment=1546]
The bottom middle one is what I zoomed in on, to be exact, but the 4 other outer ones are copies, so there should be no differences between them. If you're curious as to why there are only 5 (big) starbursts, I intend to copy another starburst, replace it with light mulberry after replacing the white with it, and then shrink it to a size suitable for my purposes; that shouldn't be a problem for me. Anyway, once again any help would be appreciated, thank you.

If you need any more information or even the xcf file itself, feel free to ask me. I can't guarantee an immediate reply, but I'll respond as soon as I can.


RE: Replacing colors including blurs - Blighty - 03-13-2018

1. Create a new transparent layer below your image.

2. Make a selection slightly larger than the white star.

3. On the new transparent layer bucket fill the selection with the desired colour.

4. Change back to your image layer. Selection must remain.

5. Do Colours > Colour to Alpha. The colour below will show through.

6. Repeat for other stars with different colours on the transparent layer.


RE: Replacing colors including blurs - Espermaschine - 03-13-2018

Make a new star with the paths tool ? Should be easy.
The halo is just a blurred ellipse (or a blurred star, not sure).

Nice design btw !
You got it from deviantart, right ?

EDIT: drew a star 4u. Could be made into a brush.

[attachment=1549]


RE: Replacing colors including blurs - rich2005 - 03-13-2018

It might help if you post the xcf. You have 11 layers there and how you proceed will depend on what is there.

Question: Do you want the blur to reflect the new colour?

If so, you might still be better starting from scratch.

Have stars and blurs on separate layers.

Paint/create from selection/path the star 100% opacity.
Draw a nice rounded selection, following the star shape, then apply a featherSelect -> Feather to the selection. screenshot https://i.imgur.com/22iW8a8.jpg

Fill the selection, turn off the selection Select -> None and reduce the layer opacity a suitable amount. screenshot: https://i.imgur.com/91bhnj5.jpg

How you proceed after that, depends on how keen you are. For individual layers, easy to change colours by locking the alpha for each layer and filling with new colour. example: https://i.imgur.com/XjI5jYg.jpg


RE: Replacing colors including blurs - Yutah123 - 03-17-2018

Well, here's the xcf file.
[attachment=1559]

(03-13-2018, 10:50 AM)Blighty Wrote: 1. Create a new transparent layer below your image.

2. Make a selection slightly larger than the white star.

3. On the new transparent layer bucket fill the selection with the desired colour.

4. Change back to your image layer. Selection must remain.

5. Do Colours > Colour to Alpha. The colour below will show through.

6. Repeat for other stars with different colours on the transparent layer.

While it did make the star orange, it also changed the color inside the selected area slightly, enough to stand out and look unnatural. A way to prevent that would be much appreciated.

(03-13-2018, 12:15 PM)rich2005 Wrote: It might help if you post the xcf. You have 11 layers there and how you proceed will depend on what is there.

I've just posted the xcf, if you care to take a look.


RE: Replacing colors including blurs - Blighty - 03-17-2018

(03-17-2018, 08:47 AM)Yutah123 Wrote: Well, here's the xcf file.

I added a new star in the top left corner. Vary sizes, colours, etc to your needs.

1. Create an oval selection slightly larger than your star.

2. Feather the oval selection 25

3. Bucket fill the oval selection with yellow - on its own layer

4. Use fuzzy select (threshold 120) to select a white star
(That's what I did - you would be better off making a new star)

5. Feather the star selection 5

6. Move the star selection over the new oval

7. Bucket fill the star with orange - on its own layer

Use the Gimp File > Open to open the xcggz file.


RE: Replacing colors including blurs - rich2005 - 03-17-2018

(03-17-2018, 08:47 AM)Yutah123 Wrote:
(03-13-2018, 12:15 PM)rich2005 Wrote: It might help if you post the xcf. You have 11 layers there and how you proceed will depend on what is there

I've just posted the xcf, if you care to take a look.

A different way applicable to your image. You do not actually have to replicate the blur effect although knowing how to get this effect is good.

You have the stars on individual layers, which is good, you can adjust individually, scale, move etc. Would be better (next time) if the background colour was not there.

1. First work on individual layers.

2. Remove the background from these small layers (5c1969) using Colours -> Color to Alpha
screenshot: https://i.imgur.com/y8CUxii.jpg

3. That gives something like this: https://i.imgur.com/uQoS9Ll.jpg

4. For a new color. Enable the layer Alpha Lock, top of the layers dialogue. Set the foreground color and fill the layer. An easy way is click and drag from the FG swatch: https://i.imgur.com/r9yEIQk.jpg

5. Repeat for each layer in turn. Color-to-alpha / alpha lock / set FG colour / fill.

Should get you to here: [Image: IFf2hrn.jpg]

edit: hmm... been practising with paths ... Wink