If you want to understand Panamanians, you must understand their relationship with the sun which is of the love-hate variety. Sure, the sun heightens a number of experiences Panamanians like (such as the Decameron) and gives way to crops Panamanians like (such as plantains), but it is simultaneously dreaded: most simply because it is everywhere.
Panamanians like to avoid the sun using a variety of techniques, most notably umbrellas, large hats, pants/long-sleeved shirts, and (when at the beach) bohios or thatch-roof huts. Rarely will you see a Panamanian basking in the sun (unless it is on a boat) and rarely will you find a Panamanian car without heavily tinted windows. Panamanian taxi drivers who don’t have air conditioning opt to wear a stand-alone sleeve on the “sun side arm” to avoid the sun.
If you want to make a terrific impression on a Panamanian, invite them somewhere dark and/or cold for the weekend such as El Valle.