For a number of years before I finally got totally fed up with Adobe products, I used a number of individual purpose "panels" developed by a small outfit called Anastasiy. Their pop-up panels really made it easy and intuitive to select colors, match colors, extract color palettes from another picture or photo, organize brushes, and handle fonts. I asked the support people at Anastasiy if they could do whatever would be necessary to integrate their panels with the Affinity products. Their answer is that they would be glad to do so, but that it would require certain additions to the code in Affinity Photo and your other products, hooks and things that are beyond my comprehension. They seemed very willing to cooperate in the integration effort and I really feel that adding the option for users to incorporate the features Anastasiy provides would be a popular plus for the Affinity product family. I believe they can be contacted at <panels@anastasiy.com>. I'm adding the following links for each of the Anastasiy panels so you can review what they do. Thank you, Tom Bank
MagicPicker Color Wheel with advanced color spaces and sliders designed for digital art.
MagicTints Standalone fast GPU AI color matching between images, generates LUT, Windows & macOS Desktop, also comes with a plugin.
MagicSquire Quick Brush HUD, lets organize brushes in colorful groups, controls brush values.
MixColors. Extracts palette from image, groups Photoshop swatches in compact folders, mixes colors.
MagicRefs Fast handling of Reference Images (image assets).
DiskFonts Preview fonts before installing them.