Salty, You could even have some plants and small shore inside, like a real pond - I thing in water pyramid there are some wonderfull ideas for inside pond landscape. I also got this when making basement aquarium - Sims could fish from upper floor. It's funny bridge you made there hehehe. I also once had inside garden, only thing that I don't line with inside outdoor areas is that Sims usually get that unfinished room moodlet - because there is no floor on ground (That is why I gave up on idea of inside garden without moveobjects on).
Katluvr that is so cute I also love experimenting with colors and am lead with same rule - if I like it - I won't change it, after all I'm suppose to look at that while playing so priority is to be nice for me.
Chronic, you might want to check few pages that are linked in topic hex codes for colors Pam started on this board.
About house, you again took picture while it is dark outside so home is not really showing in it's full. This flat roof is nice - goes well with large modern windows you place. As for other things, well, wait till they earn more money
You can always place hydrangea as Seabody told you, but couple of trees won't look bad neither, plus some terrain painting and maybe few rocks will work fine. Maybe get rid of that fence you place in front door - it may cause some routing issues beside not really fitting in. 1 or 2 white hydrangea and white flowers terrain paint might do the trick.
My favorite tree now is Cinnamon tree, and after that, Olive tree. Check around in that section and see what you like. You don't even have to have a theme. Bougenvilla and Cypress tree look great together
I'm havinga inspiration block again with my CAW project - suddenly I don't like flagstone that much and would change it back to asphalt, and would love to put dark grass all over the place, so I'm playing a dynasty instead of destroying everything I build so far.In dynasty I'm still using the same small starting home with 2 bedrooms and smal living room, even if they have more than 650 000$ in cash. I'll be happy to give you some money Chronic if that was the OK, but it isn't. I'm planing to keep it minimalistic, so file don't end up too big and lot too cluttered like it did last time..