In Mr Quillers book, he specifies a range of colours. One such is a red made by Sennelier, Bright Red, 619, pigment unspecified on the tube. Question is, how can one judge the robustness of a colour used to paint watercolors when its pigment is unspecified by the manufacturer? Has anyone tested this paint for lightfastness? ( it would be foolish to trust the manufacturer).
Interesting !
very interesting and useful thank you
C è qualcuno che ha tradotto i dvd di Stefhen Quiller in italiano ?
In Mr Quillers book, he specifies a range of colours. One such is a red made by Sennelier, Bright Red, 619, pigment unspecified on the tube. Question is, how can one judge the robustness of a colour used to paint watercolors when its pigment is unspecified by the manufacturer? Has anyone tested this paint for lightfastness? ( it would be foolish to trust the manufacturer).