Photoshop - Colour
Colour Mode - Percentage on your image and then RGB (Red Green and Blue)
Image - mode - can chose the colour mode of your image. RGB or CMYK etc.
CMYK - colour mode used for print. (Tones of the printer ink)
RGB is the default mode
Go on view - gamut warning and it highlights all the colours that won't print
Then go to adjustments - hue and saturation and pull the saturation to the left
CMYK and SPOT colour
Colour picker - Colour Libraries. Most common is 'pantone stock'
What you pick is your foreground colour ready to colour with
Channels palette. Go to layers, top row. Channels hold the colour within the image.
Channels - top right - new spot channel. Chose a colour and click ok. Layer is named with its reference number. If you have a brief and they give you a certain colour you just type it in
As soon as you colour the channels overlap like it would if you used a multiply layer mode. This is called 'Overprinting' when one ink prints on top of another.
Solidity - By default it is 0% but if you change it to higher, it goes like 'normal' mode and overlaps the other colour.
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