I find that the ULine mats are pretty cost effective, but they are black or grey. Getting something "light colored" of similar anti-fatigue quality is going to be a tough row to hoe. You'll also want to consider the impact of what your personal choice of footwear is while working in there relative to slipperiness...
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BTW, Brian speaks the truth about those miters on the crosses...they were incredibly precise and tight, which considering their size...well...amazing.