Board Thread:Suggestions forum/@comment-27340559-20160224091024/@comment-27340559-20160226082247

AlteOgre wrote: Here's a mod that may inspire you to find more natural stone types and their appearances: UndergroundBiomesConstructs. An overview of stone types added is presented in the original thread (spoiler 'Images and detailed description).

A yellow type of stone that could fit your needs would be Limestone. Thanks :)