RGB thinking can be very powerful in guiding your editing. Here’s the next step beyond this in understanding the relationships between R, G and B, in particular which is the maximum, middle and minimum values and the effects these values have on colour.
Understanding this, we can, for example (and shown here), use Selective Colour to shift one colour to make it the Complement to another colour, and so create a more pleasing image.
For related videos, see here: http://changingminds.org/disciplines/photography/affinity_photo/youtube_videos/585_power_3m_thinking.htm#see
There are now online pages for InAffinity here: https://changingminds.org/disciplines/photography/affinity_photo/affinity_photo.htm
Free resources, including macros, palettes, etc. are here:
If you are a beginner, start here:
There is a full, cross-referenced index for every video here: https://changingminds.org/disciplines/photography/affinity_photo/inaffinity_video_index.htm
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The web page for this video is here: http://changingminds.org/disciplines/photography/affinity_photo/youtube_videos/585_power_3m_thinking.htm
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