There was very little OIII in this bicolor (Ha/OIII) combine. The brighter stars lost color data due to saturation from the very long exposures required for the faint target.The smaller stars all had a reddish hue due to Ha/OIII mismatch which I reduced pending RGB data.

Ha: Astrodon 5nm, 8 hours, 60 minute subs, binned x 2
OIII: Astrodon 3nm, 5.5 hours, 30 minute subs, binned x 2

QSI 540 wsg
Celestron 9.25" Edge HD @ f/10
Avalon M Uno