This is the blog of Ronald Bartels that wanders on and off the subject of problem management (that is how it started), but it is best described by Ray who says this is Daddy's thoughts! Like the best music is from the Eighties and a wee dram helps in solving most inconveniences.
The whisky colour chart (Whisky Magazine)
Whisky colour is graded using the above chart. There are some more tools here.