Keep the paint label or colour reference where available. An original colour can still look different beside a weathered finish. A sample supports discussion, but no exact invisible match should be promised solely from a colour code or phone photograph.
A touch-up can differ in sheen, texture or colour from aged paint. Agree whether a visible local finish is acceptable before proceeding. Repainting a complete component may be a better separate option, but it must not be silently added to the spot-work quote.
The edge of the damaged paint may need suitable ordinary preparation before a touch-up. Show surrounding flaking and previous repairs. Hazardous-material disturbance and extensive stripping are excluded; the accepted area must be sound enough for the proposed local treatment.
Prepare and touch up the agreed small accessible exterior areas with compatible materials, keeping the repair boundaries clear. Scope limits: Small accessible sound exterior spots only. No full exterior restoration, waterproofing, hazardous coating disturbance or specialist high-access work.