I question if this is a new home why the siding wasn't caulked to begin with. Especially plywood type siding which needs extra protection at the edges. Properly, siding should be completely painted before installation, whether solid wood, plywood or cement based such as Hardie Plank. This encapsulates the material making it much more weather resistant. Once installed it is caulked with a painteable caulking such as DAP 230 and then the final coat is applied. Some caulking does not come clear and even if it were used I suggest that you would see it anyway.
To answer your question, generally the practice is to use paintable white. It's easier for contractors to stock and will accept most light colors without difficulty. DAP 230 does come in other colors but is often difficult to match perfectly.
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Bart Blainey, B.E.R.
Consultant/Journeyman Carpenter
Building Envelope Specialist
Master Renovator
provip@prodeck.org
http://www.prodeck.org
Barton Blainey (provip) specifically assumes no legal liability or responsibility for the accuracy, completeness or usefulness of any information or process disclosed. The above further expressly advises that any use of or reliance upon the information and or opinion disclosed is at your risk .
_________________________
Bart Blainey, B.E.R.
Consultant/Journeyman Carpenter
Building Envelope Specialist
Master Renovator
provip@prodeck.org
http://www.prodeck.orgBarton Blainey (provip) specifically assumes no legal liability or responsibility for the accuracy, completeness or usefulness of any information or process disclosed. The above further expressly advises that any use of or reliance upon the information and or opinion disclosed is at your risk .