Couldn't they have made the legends transparent? Nothing says elvish like a bright light shining through the elvish text. They are double shot anyway -- for me this is a missed opportunity, and I don't like the color choices either.
What is the symbol to letter conversion based on? I would love a Tengwar keycap set, but these seem way off compared to the widely accepted 'Common Mode'. Numbers seem correct on the F-row, but not on the number row. Ofcourse some letters (like q) are hard to match, but there is a perfectly valid symbol for 'y'. However, that is shown on the 'h' key, which I would expect to look like a lower case greek lambda.
Would make it very confusing to use the Hardcore set, which I prefer over the more cluttered training kit.