There are many ways to change the colours or skin textures or materials,.
The easiest way is to buy other skin shaders, then apply them to your figure,
You can also adjust skin tone directly in Carrara by creating a “Mixer” of the skin texture map, with a colour, texture map..or any other shader component.
You can also 3D-Paint your figure, directly in Carrara pro.
You can create your own texture maps, in an image editor like photoshop.
You can download “Texture template’s” ( B/W wire-frame UV maps) which can be used as a painting or texturing guide in a 2D image editor like Photo-shop, or the GIMP. which is free.
Texture templates can be found and downloaded in the main product’s store page. usually under “Additional resources” .
You can create mixers to add procedural shaders to the existing skin texture maps.
Carrara can also animate shaders,.
For example,. if your figure has a skin shader made of a mixer of two different skin texture maps,. then you could animate that change over time.
Hope it helps