since the ceiling may be some shade of blue, why not repeat it in the cellular blinds, top-down, blackout? is it possible? If not, then maybe have blue sheers with a pattern to provide filtered shade in summer evenings. https://www.blinds.com/p/levolor-9-16-inch-light-filtering-cellular-shades/503416
https://www.google.com/search?client=ms-android-verizon-us-rvc3&sca_esv=2eaa911ee7c3b9ce&sxsrf=AE3TifO60MMKkkJ0kirSTro6y3WJwqZpTA:1752915698125&udm=28&fbs=AIIjpHz30rPMyW-0vSP0k1VTNmO_w7HWzdssfT8--zJ8qNsl8L7-5q__n7BwgNeB-qyHnROq4kq5QtH1DPgAP9eGH3yp6h9zNaZB5Kq6yrHeryMTG1FKUGWxkpAV0ZJcyK-XW0VwDOA_-OHVWGpm0Ns5Gz3s7haxZubrDIhQDMhC1kfYCO9fyy1OwBOypF6hlIFSArVLVka1Zazp1sHlBIemyi2VjnzQfUkhaD2bwABX0KEp7lz9mA0&q=silk+sheers+with+embroidery&ved=1t:220175&ictx=111&biw=411&bih=770&dpr=2.63#piu=ps:59&oshopproduct=gid:2336410879289110636,mid:576462697440520222,oid:3454177777885345286,iid:13463211998960820600,rds:UENfMjMzNjQxMDg3OTI4OTExMDYzNnxQUk9EX1BDXzIzMzY0MTA4NzkyODkxMTA2MzY=,pvt:hg,pvo:3&oshop=apv&pvs=0
the Space Gray shades are up
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