I suggest the colour of your gutters & window frames (if they are the same colour?) i.e. a darker colour. Light colours, especially Surfmist, tend to stand out and block the depth of view. The viewer will look "at" it. Dark colours recede and you tend to look "into" them and they are more inviting, They also add warmth. Keep in mind any colour significantly different from the render colour will stand out and become a dominant feature of the total house appearance. Hence why custom doors are gaining popularity as the styles can be one colour and the infill panels can be a myriad of colours and textures. Having trouble choosing from the standard Colorbond range of colours? Consider getting a Dulux powdercoated colour. They cost a fraction more but deliver a whole range of colours. They also offer better fade & corrosion protection especially if near coastal areas. You can also get the tracks on the inside powdercoated in black which looks neat. Custom spray painted colours or a vinyl/rubber "wrap" similar to the trend used on changing the colours of cars is emerging as an alternative. Don't get an embossed pattern on the panels that is either rectangles or squares. They are dated designs. Also, a smooth finish will show up an imperfection in the metal. The Cosmopolitan or Wide-Line styles (www.asapgaragedoors.com.au) suit rendered house finishes. Solid wood doors are a lot of upkeep (to stop fading and weathering if not sealed properly), are very heavy, and require a stronger motor. Colorbond colors Caoba and Cedar wood-look metal doors like all colours fade over time and can look daggy especially the Cedar. Custom doors are expensive. Be aware that many of the polycarbonate infill door panels (see-through & opaque) can get condensation in the hollow inners which eventually becomes mouldy. Sectional (panel) doors have many moving parts which need to be regularly serviced i.e annually.

You say you want stain ideas for garage door. This seems unusual, because usually garage doors are not painted, they come in a colour made in a factory. Do you just mean colours. I would suggest Dulux beige royal for render. Colorbond Evening haze for garage door. Then a cedar stain for front door. Or the front door could be any colour really. Maybe Evening haze to match garage door, or even a red front door.

We just had quotes for garage doors and they started at $6,000, then go to $10,000 and the next price point is $15,000. It depends on the type of materials you are using and the door opening. The guy quoting showed us one that was similar to your first photo and had said it was $30,000. All in all, they are not cheap. it was useful to have someone out to quote and help with the options.

Ask the Painting company for what warranty they supply. I would tend to believe the paint foreman. I’ve seen lots and lots of finishes etc specified by architects/designers/Project managers that are a bad idea or are unable to be used in the real world. The hands on people are the ones to listen to.