Winsor & Newton Professional Watercolours:
 
Large Range of Single Pigment Colours
Unrivalled Transparency
Lightfast and Permanent
 
Tubes
Perfect for working at a large scale with a quicker release, tubes are invaluable. You can use large quantities in one go, which is particularly helpful with a restricted palette.
 
Lemon Yellow is a clear bright yellow colour. It is part of the Hansa pigments.
 
Bismuth Yellow is a bright opaque lemon yellow with excellent covering properties.