I have been making a creature breeder in GM 1.4 for the past couple years and something I have always wanted to do is color individual body parts. It was something I could not do so I ended up giving the entire body the "tint". I keep my RGB numbers in the high range to keep my colors "light". I was wondering if I could still do this with your system WITHOUT using grey scale body parts? Could I use your system to add a light splash of color to already colored body parts? Also, will it run ok using the version of spine I have and the runtimes I use? I use an older version of Spine and older runtimes because of issues with 1.4. 

If this is possible I would be more than happy to purchase your lovely extension, thanks for making this. :)

UG

Hi,

If I understand you correctly, no it is not possible to tint certain areas of a slot to create "highlights" within the original source image.  This isn't possible with Spine itself either though (inside the editor) and isn't how slot colouring is supposed to work.
You could of course have a "highlight" slot with an image attachment that is positioned over the base image and colour that a lighter colour.

Highlights would normally be created using lighter/darker areas in the original image and the resulting tint would then be lighter or darker based on the blend with the original colour value. You don't have to use greyscale body parts, but using already coloured parts limits the colours you can tint to, simply because of the way colour blending works. 

Using greyscale source images allow you to blend to any colour cleanly and retain shading of light / darker areas by simply using lighter / darker grey areas on the source files.  Very easy to manage.

The best thing I can say is to download the Test Tool from the extension page, load in your json files and have a play around with colouring the various slots on your skeleton and see the results.

Many art programs should be able to help you convert any existing "coloured" images to greyscale if you also wanted to play around with your skeleton in greyscale and see the different possibilities when greyscale images are used as the source images.

In terms of Spine version, the extension supports the version of Spine recommended by YYG.
This is currently v3.4.02, and although later versions should work the extension will keep in line with the "officially supported" GMS version.

The general rule is: "If a skeleton will load into GMS as a sprite, then it will load into the Test Tool without issues.".

I made the tool so people could see the end results of slot colouring on their own skeletons before they decided whether to purchase the extension, and it seems this would be ideal for you to do.  Test it out with a greyscale skeleton and a colour skeleton and check out the results to see if they are suitable for your project.

If you have any problems with anything let me know and I'll be happy to help.