White equates to death in Chinese culture, but also to the Westerly direction which is also benefited by metals and pale greys. For a south east door as you have, stick to the colours you have suggested: green, light blue and turquoise are perfect. Perhaps you could do the same colour for both doors or a paler shade of the same colour for the back door. Definitely not white though! Also wood elements to include other than colour are tall rectangular like shapes in these areas. But generally lots of plants, flowers and wooden furniture will improve everything in this zone. Especially darker wood tones. Maybe pencil pines would be especially nice if you like them. Wooden wind chimes might be auspicious. Good luck, I think it looks really pretty!

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.

are the new sliding glass doors double glazed? are the original windows single glazed or in need of replacing for any other reason? do you hate the beige colour? how many of the old windows can be seen at the same time as the new doors? ... inside looking out is the most important view for me but what do you like the look of?

Post a picture for more comments. Otherwise be bold and choose your favourite colour.