# Suggestion: color multiplier for layers / objects
**URL:** https://discourse.mapeditor.org/t/suggestion-color-multiplier-for-layers-objects/932
**Category:** Suggestions
**Created:** [November 22, 2015, 8:27am UTC](https://discourse.mapeditor.org/t/suggestion-color-multiplier-for-layers-objects/932 "2015-11-22T08:27:09Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Rasmus\_Hoglund](https://discourse.mapeditor.org/u/Rasmus_Hoglund)
#### Post date: [November 22, 2015, 8:27am UTC](https://discourse.mapeditor.org/t/suggestion-color-multiplier-for-layers-objects/932/1 "2015-11-22T08:27:10Z")
Hi, I’m pretty new to tiled, so I’m not sure if this has been suggested before.
I’ve just recently migrated my tiled maps to tiled, before I was using an editor I built myself.
A feature I had in my editor, that is useful and I think pretty easy to implement, is to have a color multiplier for layers (and also for individual objects).
That way you could create a background layer with the same tileset just a darker multiplier for the colors.
In a renderer it’s easy to implement just a call to glColor4f() before rendering layer / object.
In the editor it would just be a value for each color compenent (r,g,b).
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### Author:  [@bjorn](https://discourse.mapeditor.org/u/bjorn)
#### Post date: [November 22, 2015, 10:52am UTC](https://discourse.mapeditor.org/t/suggestion-color-multiplier-for-layers-objects/932/2 "2015-11-22T10:52:12Z")
> [@Rasmus\_Hoglund](#):
>
> A feature I had in my editor, that is useful and I think pretty easy to implement, is to have a color multiplier for layers (and also for individual objects).
I currently can’t find an issue just about color multiplication, but there is a more general issue about adding support for blend modes:
>
>
> One interesting capability is to be able to write one's own layer blending, spec…ially the way it combinates layers.
>
> I myself would like to have the following setup:
> \-One layer has tiles in say, 2,3 or 4 shades of monochrome
> \-Another layer is used to select a palette for the tile above, and will replace each shade of monochrome with a colour, or alternatively, there is one layer for selecting each of the colours of the palette
>
> and similar. This would require the capability to write one's own blending/layer drawing functions. It would be very useful though, specially for retro dev.
> [@Rasmus\_Hoglund](#):
>
> In a renderer it’s easy to implement just a call to glColor4f() before rendering layer / object.
In an OpenGL-based renderer yes (though `glColor4f` should no longer be used in modern OpenGL) but Tiled is using a software renderer based on [QPainter](http://doc.qt.io/qt-5/qpainter.html), which does not seem to support a color multiplier.
Anyway it’s a feature I would like to support eventually, but I would do it for “Tiled Quick”, a new version of Tiled built on Qt Quick. That project is currently in its infancy though.
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### Author:  [@Rasmus\_Hoglund](https://discourse.mapeditor.org/u/Rasmus_Hoglund)
#### Post date: [November 23, 2015, 10:47am UTC](https://discourse.mapeditor.org/t/suggestion-color-multiplier-for-layers-objects/932/3 "2015-11-23T10:47:20Z")
Thank you for your reply.