Maybe try a subscription box from Dia & Co? I haven't bought anything myself, but the styles look pretty versatile and they have a wide variety of options.
I can't help with capris specifically (I wear either shorts or long pants because of the way capris hit my knees/calf) but I did see a few cute options in Torrid's spring line that may fit the bill for you.
In a pinch, if you have Amazon Prime, you can use Try Before You Buy and just order a bunch to see what works for you - I ended up doing that with jeans (I hate jeans shopping) and it was pretty painless.
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Liz
DD (3/2010)
"Make mistakes! Get messy!" - Miss Frizzle