Navy Blue, Dark Blue
If you want to turn your thread into a sweet color you just HAVE to go with navy blue or dark blue. That's the sweetest color in existence, everyone knows that. After all, blue raspberry flavor is dark blue and it's super sweet.
Turn your thread a sweet navy color and people will be reminded of yummy blue raspberry. MmMmm.
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Now that your threads are navy colored you need to be careful that condors (こん) don't try to steal it for their nests. Condors love dark blue things and thread is perfect for a condor nest.
Imagine a condor stealing your sweet navy thread right after you dyed it, flying off. Lame!