In that mode, paint tools only fill transparent pixels, partially fill partially opaque pixels to "complement to opacity" with the new color, and leave alone the opaque pixels. To fill the background, we could just add a layer filled with the new background color, move it to the bottom of the stack and merge everything, but there is a faster method: use the Behind mode of the bucket-fill tool (the "mode" is the selector at the top of the Tool options). The problem is, the dithering tool in GIMP is inferior to what Photoshop (or other programs) can do and your gifs can end up looking kind of crappy (depending on the. gif you have to convert from RGB mode to Indexed mode due to the 256 color limit of the gif format. So we can bucket fill the whole layer with the new color, the color will only "stick" on the opaque pixels (and stick partially on the partially opaque pixels): So if you make gifs in GIMP, you probably know that before you can export as a. When it is set, the opacity of the pixels cannot change. The alpha-lock is the checkerboard icon in the "lock" line at the top of the Layers list. ![]() We can then paint with the same opacity by setting the alpha-lock on the layer. The remaining pixels have exactly the opacity necessary to recreate the text: Editing a still GIF uses the same process as editing any other still image, but an animated GIF is slightly different: each frame is treated as a separate layer. seems odd that the default should choose to do everything backwards. ![]() We use Colors>Color to alpha to remove the background color. (06-01-2021, 01:51 PM) mrron Wrote: how do i reverse frame animation order where i have maybe hundreds of frames seems odd that the default should choose to do everything backwards. Note that this technique works to change foreground/background to any color, not just to exchange them. ![]() So what we need to do is to recover that opacity, and use it when repainting with new colors. The basic principle is that the text is made of pixels of varying opacity (fully opaque for most, but partially opaque on the edges) overlaying a background. In such a simple image, not very difficult. Suzanne Wheeler doesn’t want to symbolize a movement.
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