Since the built-in IMatch metadata editor is just what I want for the display of data, but unfortunately, doesn't accommodate attributes, my next attempt (since I don't program) is to find a code recipe (3rd-party) that would let me display text, incorporate the IMatch variables, and provide for the formatting characteristics like font, font size, foreground/background color, etc. Anyone here have any ideas?
I guess, you have a lot of attributes, what you want to show in the metadata-panel?! I have only very small parts in the attributes, what I let display with variables in the window layout under each thumb.
I do use attibutes not for long texts or a lot of fields, because the attributes panel is not very flexibel, from my point of view.
Have a look at the "Application Variables" and "Attributes" sample apps included in IMatch.
You see them in the App Manager when you switch IMatch to Developer Mode via Edit > Preferences > Application.
The VarToy app shows how to let IMWS evaluate a variable (send the variable and output the result).
For fonts and colors, use CSS: https://www.w3schools.com/css/.
The IMWS documentation app explains all end points available in IMWS.