I won this plain pink tsumugi furisode on eBay tonight. I am so excited about it! I've honestly never seen a plain color furi, nor a tsumugi one for that matter.
Initially, I'm going to let my sister (or maybe myself) use it for a cosplay of Botan (from Yu Yu Hakusho). We'll need to get a white obi as well as red obiage, blue (or maybe purple? I can't really tell...) obijime, and red zori, but those shouldn't be too hard to acquire. Truly, this was the hardest part; cheap pink iromuji are readily available, but furisode... not so much.
The biggest trouble I'll have now is getting the correct obi. From what few pictures I have of the musubi, it looks like a cho cho musubi, but the obi appears to be hanhaba, not the typical fukuro. So I will have to see if I can find more pictures to decide what would be the best course.
After the cosplay is through, I may decide to cut the sleeves to make it an iromuji, but I'm not sure I'll have the heart to, considering the difficulty of acquiring this piece!