this might help with the icons Iconset Maker Pixel Perfect (Updated) - Icons - Directory Opus Resource Centre (dopus.com)
here are some dual mode sets
IconSet Himmelsbla v1.2 Dual.dis (1.4 MB)
FLUENT_UI_DUALTONE.dis (1.5 MB)
Express Dual Small.dis (371.2 KB)
Express Dual.dis (426.3 KB)